Air-valve for radiators.



N. U. PEHIS.

AIR VALVE FOR RADI ATORS.

- APPLICATION FILED AUG-I0. 1915.

1,213,405. Patented Jan. 23, 1917.

NT OFFICE.

NICHOLAS U. PERIS, or LANcAs'rER, PENNSYLVANIA.

AIR-V LVE non RADIATORS.

Specification of Letters Patent. I Patnted J an. 23, 1917.

Application filed August 1Q, 1915. Serial No. 44,691.

To all whom it may concern:

Be it known that I, NIoHOLAs U. Pnnrs, a citizen of the United States, residing at Lancaster, in the county of Lancaster and State of Pennsylvania, have invented certain new and useful Improvements in Air-Valves for Radiators, of which the following is a specification.

The present invention relates to air valves for radiators and consists in the combinations and arrangements of elements hereinafter described and particularly set forth in the accompanying claim.

The invention has for its purpose to provide an air valve adapted for ready attachment to standard radiators which will be substantially wholly concealed when in applied position to the end of avoiding the well known disadvantages attending the present used exposed air valves, 6. 9., tampering, removal, and stoppage by the insertion of foreign matter.

A further purpose of the invention is to produce an invisible radiator air valve involving but few parts not easily liable to get out of order, and one which will be automatic in operation.

The invention is shown by way of illustration in the accompanying drawings, wherein:

Figure 1 is a longitudinal sectional view thereof showing the same applied to a radiator. Fig. 2 is a transverse sectional view taken on the line 2-2 of Fig. 1, looking in the direction of the arrows, and Fig. 3 is a transverse sectional view on the line 33 of Fig. 1 and looking in the direction of the arrows.

Referrin to the construction in further detail, the device consists of a tubular member 1, having screw-threads 2 for attachment to the wall 3 of the radiator, and said tube is formed with a head 4 having a knurled surface 5, whereby the same may be readily applied to position and removed by the hand.

The tube 1 is bodily inserted within the radiator, leaving only the head 4 thereof exposed, and at its inner end said tube is formed with screw-threads 6 receiving a plug 7 that is provided with a transversely disposed slot 8 to receive a. screwdriver or other instrument for inserting and removing the plug. An aperture 9 extends axially through the plug and communicates with the interior of the tubular body, as clearly shown in Fig. 1.

A body 10, of suitable composition, is located within the chamber of the tube and, under normal conditions, is slightly less in length than the length of said chamber,

whereby to leave exposed the opening 9 through the plug 7 and permit of passage of air from within the radiator to the chamber, whence it escapes to the atmosphere through the opening 12 formed in the head 4, and to insure the free passage of the air through the opening 12, the body 10 is reduced at its end adjacent said head 4 to provide the enlarged annular space 11, as indicated in Fig. 1. When the body 10 has expanded under the influence of heat of the incoming steam, the opening .9 through the plug 7 is effectively closed, when the radiator will be heated after the usual manner.

The expansible body 10 normally rests on the bottom of the tubular member 1, and the plug 7 is adjustable in said tubular member in order that said body 10 may be loose, or have freedom of movement. The plug 7 may also be readily removed to permit of 1igheil insertion and removal of the expansible It will be seen from the foregoing that the air valve disclosed herein will be effectively concealed from view and automatically operable to perform its function, and that the same is fool-proof in that it cannot be tampered with and thereby cause the disadvantages already noted.

It is obvious that those skilled in the art may vary the details of construction and arrangement of parts without departing from the spirit of the invention, and therefore I do not wish to be limited to such features except as may be required by the claim.

Having thus described my invention, what I claim as new, is:

An air valve for radiators comprising a tubular body adapted to the radiator and havingscrew-threads at its outer end for attachment to the radiator, a head formed integrally with said tubular body at said threaded end and adapted to fit closely against the outer surface of the radiator, said head having an opening therethrough communicating with and angular to the tube chamber, an adjustable and removable apertured plug screw-threaded wholly within the inner end of the tubular 110 fit wholly within body, and a composition member fitting loosely within the tube and expansible to close the aperture in said plug; and said composition member being reduced at the end adjacent the tube head forming an annular clearance to provide a contin'nous passage from the aperture in the head through the aperture inthe plug when the expansible Copies of this patent may be obtained for five cents each, by addressing the NICHOLAS U. PERIS. WVitnesses \V. M. LILLISTON, CHAS. E. LONG.

commissioner of Patents,

waahirngton, D. 0. 

